[INFO] fetching crate welly-parser 0.3.0...
[INFO] building welly-parser-0.3.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate welly-parser 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate welly-parser 0.3.0
[INFO] finished tweaking crates.io crate welly-parser 0.3.0
[INFO] tweaked toml for crates.io crate welly-parser 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate welly-parser 0.3.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate welly-parser 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2448bdaad77bf6df56130d2e66c118e0b5c6b46741f48d1c3650de116fb1691
[INFO] running `Command { std: "docker" "start" "-a" "e2448bdaad77bf6df56130d2e66c118e0b5c6b46741f48d1c3650de116fb1691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2448bdaad77bf6df56130d2e66c118e0b5c6b46741f48d1c3650de116fb1691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2448bdaad77bf6df56130d2e66c118e0b5c6b46741f48d1c3650de116fb1691", kill_on_drop: false }`
[INFO] [stdout] e2448bdaad77bf6df56130d2e66c118e0b5c6b46741f48d1c3650de116fb1691
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce8bcc1a083d07266917303665c0fa0e4d8218f3637208fd53c970553e706738
[INFO] running `Command { std: "docker" "start" "-a" "ce8bcc1a083d07266917303665c0fa0e4d8218f3637208fd53c970553e706738", kill_on_drop: false }`
[INFO] [stderr]    Compiling welly-parser v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/ast.rs:387:17
[INFO] [stdout]     |
[INFO] [stdout] 387 | pub struct Case(Location, Box<LExpr>, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Case` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/ast.rs:406:17
[INFO] [stdout]     |
[INFO] [stdout] 406 | pub struct Else(Location, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Else` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ast.rs:543:18
[INFO] [stdout]     |
[INFO] [stdout] 543 | pub struct Block(Box<[Stmt]>);
[INFO] [stdout]     |            ----- ^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Block` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "ce8bcc1a083d07266917303665c0fa0e4d8218f3637208fd53c970553e706738", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce8bcc1a083d07266917303665c0fa0e4d8218f3637208fd53c970553e706738", kill_on_drop: false }`
[INFO] [stdout] ce8bcc1a083d07266917303665c0fa0e4d8218f3637208fd53c970553e706738
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c91a888b892cb6f1a132f5c147ac7396aa9adeaf08d5236805fd55081920b3d
[INFO] running `Command { std: "docker" "start" "-a" "0c91a888b892cb6f1a132f5c147ac7396aa9adeaf08d5236805fd55081920b3d", kill_on_drop: false }`
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/ast.rs:387:17
[INFO] [stdout]     |
[INFO] [stdout] 387 | pub struct Case(Location, Box<LExpr>, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Case` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling welly-parser v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/ast.rs:406:17
[INFO] [stdout]     |
[INFO] [stdout] 406 | pub struct Else(Location, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Else` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ast.rs:543:18
[INFO] [stdout]     |
[INFO] [stdout] 543 | pub struct Block(Box<[Stmt]>);
[INFO] [stdout]     |            ----- ^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Block` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/ast.rs:387:17
[INFO] [stdout]     |
[INFO] [stdout] 387 | pub struct Case(Location, Box<LExpr>, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Case` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/ast.rs:406:17
[INFO] [stdout]     |
[INFO] [stdout] 406 | pub struct Else(Location, Block);
[INFO] [stdout]     |            ---- ^^^^^^^^  ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            fields in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing these fields
[INFO] [stdout]     = note: `Else` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/ast.rs:543:18
[INFO] [stdout]     |
[INFO] [stdout] 543 | pub struct Block(Box<[Stmt]>);
[INFO] [stdout]     |            ----- ^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Block` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "0c91a888b892cb6f1a132f5c147ac7396aa9adeaf08d5236805fd55081920b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c91a888b892cb6f1a132f5c147ac7396aa9adeaf08d5236805fd55081920b3d", kill_on_drop: false }`
[INFO] [stdout] 0c91a888b892cb6f1a132f5c147ac7396aa9adeaf08d5236805fd55081920b3d